<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <div id="test"></div>

    <script type="text/javascript" src="../js/react.development.js"></script>
    <script type="text/javascript" src="../js/react-dom.development.js"></script>
    <script type="text/javascript" src="../js/babel.min.js"></script>
    <script type="text/babel">
        //1. 创建类式组件 
        class MyComponent extends React.Component {
            render() {
                console.log(this);
                // render是放在哪里得? 类得原型对象上,供实例使用的
                return <h2>我是用类定义得组件（适用于[复杂组件得定义]）</h2>
            }
        }
        // 2. 渲染组件到页面
        ReactDOM.render(<MyComponent />, document.getElementById('test'))

        /*
      执行了ReactDOM.render
        */


    </script>
</body>

</html>